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11. Georgia ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Georgia ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

12. Hawaii ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Hawaii ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

13. Idaho ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Idaho ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a f... Environmental Systems Research Institute, Inc. (ESRI).

14. Illinois ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Illinois ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

15. Indiana ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Indiana ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a... Environmental Systems Research Institute, Inc. (ESRI).

16. Iowa ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Iowa ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a fi... Environmental Systems Research Institute, Inc. (ESRI).

17. Kansas ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Kansas ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of a ... Environmental Systems Research Institute, Inc. (ESRI).

18. Kentucky ZIP Code Areas 2002

2001. Geographic Data Technology, Inc. (GDT). Kentucky ZIP Code Areas represents five-digit ZIP Code areas used by the U.S. Postal Service to deliver mail more effectively. The first digit of ... Environmental Systems Research Institute, Inc. (ESRI).

19. Level III Ecoregions, Arizona, 2013

2013. US Environmental Protection Agency. Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources. They are designed to... U.S. EPA Office of Research & Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL).

20. Level IV Ecoregions, Arizona, 2013

2013. US Environmental Protection Agency. Ecoregions by state were extracted from the seamless national shapefile. Ecoregions denote areas of general similarity in ecosystems and in the typ... U.S. EPA Office of Research and Development (ORD) - National Health and Environmental Effects Research Laboratory (NHEERL).